/Engine/Plugins/Online/OnlineServicesEOSGS/Source/Public/Online/SessionsEOSGS.h
Writes only the new values for all updated session settings to the SessionModificationHandle
void WriteUpdateSessionModificationHandle ( EOS_HSessionModification & SessionModificationHandle, const [FSessionSettingsUpdate](API\Plugins\OnlineServicesInterface\Online\FSessionSettingsUpdate) & NewSettings )